/*******
cbe_event.js
CrossBrowserElement v3b15 (Events)
Cross-Browser DHTML for IE 4+, NN 4+, Gecko, and Opera 4+
Download the latest version at cross-browser.com

Copyright (c) 2001 Michael Foster (mfoster@cybrtyme.com)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details, at www.gnu.org.
A copy of the GNU LGPL has been included with this distribution.
*******/

var cbeEventJsLoaded = true;

function CrossBrowserEvent()
{
  ////// Methods
  this.init = cbeInitEvent;
  this.stopPropagation = cbeStopPropagation;
  this.preventDefault = cbePreventDefault;
  ////// Properties
  //// from DOM2 Interface Event
  this.type = "";
  this.target = null;
  this.currentTarget = null;
  this.eventPhase = 0;
  this.bubbles = true;
  this.cancelable = true;
  this.timeStamp = 0;
  // eventPhase masks
  this.AT_TARGET = 1;
  this.BUBBLING_PHASE = 2;
  this.CAPTURING_PHASE = 3;
  //// from DOM2 Interface MouseEvent : UIEvent
  this.screenX = 0;
  this.screenY = 0;
  this.clientX = 0;
  this.clientY = 0;
  this.ctrlKey = false;
  this.shiftKey = false;
  this.altKey = false;
  this.metaKey = false;
  this.button = 0;
  this.relatedTarget = null;
  // button masks
  this.LEFT = 0;
  this.MIDDLE = 1;
  this.RIGHT = 2;
  ////// from IE4+ Object Model
  this.keyCode = 0;
  this.offsetX = 0;
  this.offsetY = 0;
  ////// from NN4.xx Object Model
  this.pageX = 0;
  this.pageY = 0;  // pageX and pageY added in v3b15
}

function cbeStopPropagation()
{
  // stub
  return;
}

function cbePreventDefault()
{
  // stub
  return;
}

function cbeInitEvent(e)
{
  if (is.ie) {
    // from DOM2 Interface Event
    cbeEvent.type = window.event.type;
    cbeEvent.target = window.event.srcElement;
    cbeEvent.currentTarget = window.event.toElement; //?
//    cbeEvent.eventPhase = 0;
    cbeEvent.bubbles = window.event.cancelBubble;
//    cbeEvent.cancelable = false;
//    cbeEvent.timeStamp = 0;
    // from DOM2 Interface MouseEvent : UIEvent
    cbeEvent.screenX = window.event.screenX;
    cbeEvent.screenY = window.event.screenY;
    cbeEvent.clientX = window.event.clientX;
    cbeEvent.clientY = window.event.clientY;
    cbeEvent.ctrlKey = window.event.ctrlKey;
    cbeEvent.shiftKey = window.event.shiftKey;
    cbeEvent.altKey = window.event.altKey;
//    cbeEvent.metaKey = 0;
    if (window.event.button == 1)
      cbeEvent.button = cbeEvent.LEFT;
    else if (window.event.button == 4)
      cbeEvent.button = cbeEvent.MIDDLE;
    else if (window.event.button == 2)
      cbeEvent.button = cbeEvent.RIGHT;
    cbeEvent.relatedTarget = window.event.fromElement; //?
    // from IE4+ Object Model
    cbeEvent.keyCode = window.event.keyCode;
    cbeEvent.offsetX = window.event.offsetX;
    cbeEvent.offsetY = window.event.offsetY;
    // from NN4.xx Object Model
    cbeEvent.pageX = cbeEvent.clientX + document.body.cbe.scrollLeft();
    cbeEvent.pageY = cbeEvent.clientY + document.body.cbe.scrollTop();
  }  
  else if (is.gecko) {
    // from DOM2 Interface Event
    cbeEvent.type = e.type;
    cbeEvent.target = e.target;
    cbeEvent.currentTarget = e.currentTarget;
    cbeEvent.eventPhase = e.eventPhase;
    cbeEvent.bubbles = e.bubbles;
    cbeEvent.cancelable = e.cancelable;
    cbeEvent.timeStamp = e.timeStamp;
    // from DOM2 Interface MouseEvent : UIEvent
    cbeEvent.screenX = e.screenX;
    cbeEvent.screenY = e.screenY;
    cbeEvent.clientX = e.clientX;
    cbeEvent.clientY = e.clientY;
    cbeEvent.ctrlKey = e.ctrlKey;
    cbeEvent.shiftKey = e.shiftKey;
    cbeEvent.altKey = e.altKey;
    cbeEvent.metaKey = e.metaKey;
    if (e.button == 1)
      cbeEvent.button = cbeEvent.LEFT;
    else if (e.button == 2)
      cbeEvent.button = cbeEvent.MIDDLE;
    else if (e.button == 3)
      cbeEvent.button = cbeEvent.RIGHT;
    cbeEvent.relatedTarget = e.relatedTarget;
    // from IE4+ Object Model
    cbeEvent.keyCode = e.which;
    cbeEvent.offsetX = e.layerX;
    cbeEvent.offsetY = e.layerY;
    // from NN4.xx Object Model
    cbeEvent.pageX = cbeEvent.clientX + document.body.cbe.scrollLeft();
    cbeEvent.pageY = cbeEvent.clientY + document.body.cbe.scrollTop();
  }
  else if (is.nav) {
    // from DOM2 Interface Event
    cbeEvent.type = e.type;
    cbeEvent.target = e.target;
//    cbeEvent.currentTarget = e.currentTarget;
//    cbeEvent.eventPhase = e.eventPhase;
//    cbeEvent.bubbles = e.bubbles;
//    cbeEvent.cancelable = e.cancelable;
//    cbeEvent.timeStamp = 0;
    // from DOM2 Interface MouseEvent : UIEvent
    cbeEvent.screenX = e.screenX;
    cbeEvent.screenY = e.screenY;
    cbeEvent.clientX = e.pageX - document.body.cbe.scrollLeft();
    cbeEvent.clientY = e.pageY - document.body.cbe.scrollTop();
    cbeEvent.ctrlKey = (e.modifiers & Event.CONTROL_MASK) != 0;
    cbeEvent.shiftKey = (e.modifiers & Event.SHIFT_MASK) != 0; 
    cbeEvent.altKey = (e.modifiers & Event.ALT_MASK) != 0;     
//    cbeEvent.metaKey = e.metaKey;
    if (e.which == 1)
      cbeEvent.button = cbeEvent.LEFT;
    else if (e.which == 2)
      cbeEvent.button = cbeEvent.MIDDLE;
    else if (e.which == 3)
      cbeEvent.button = cbeEvent.RIGHT;
//    cbeEvent.relatedTarget = e.relatedTarget;
    // from IE4+ Object Model
    cbeEvent.keyCode = e.which;
    cbeEvent.offsetX = e.layerX;
    cbeEvent.offsetY = e.layerY;
    // from NN4.xx Object Model
    cbeEvent.pageX = e.pageX;
    cbeEvent.pageY = e.pageY;
  }  
  else if (is.opera) {
    // from DOM2 Interface Event
    cbeEvent.type = e.type;
    cbeEvent.target = e.target;
    cbeEvent.currentTarget = e.currentTarget;
//    cbeEvent.eventPhase = e.eventPhase;
//    cbeEvent.bubbles = e.bubbles;
//    cbeEvent.cancelable = e.cancelable;
//    cbeEvent.timeStamp = 0;
    // from DOM2 Interface MouseEvent : UIEvent
    cbeEvent.screenX = e.screenX;
    cbeEvent.screenY = e.screenY;
    cbeEvent.clientX = e.clientX - document.body.cbe.scrollLeft();
    cbeEvent.clientY = e.clientY - document.body.cbe.scrollTop();
    cbeEvent.ctrlKey = e.type=='mousemove' ? e.shiftKey : e.ctrlKey;
    cbeEvent.shiftKey = e.type=='mousemove' ? e.ctrlKey : e.shiftKey;
    cbeEvent.altKey = e.altKey;
//    cbeEvent.metaKey = e.metaKey;
    if ((e.type == 'click' && e.which == 0) || ((e.type == 'mousedown' || e.type == 'mouseup') && e.which == 1))
      cbeEvent.button = cbeEvent.LEFT;
//    cbeEvent.relatedTarget = e.relatedTarget; // this was crashing Opera, commented out in v3b12
    // from IE4+ Object Model
    cbeEvent.keyCode = e.which;
//    cbeEvent.offsetX = e.offsetX;
//    cbeEvent.offsetY = e.offsetY;
    // from NN4.xx Object Model
    cbeEvent.pageX = e.clientX;
    cbeEvent.pageY = e.clientY;
  }
}

function _cbeAddEventListener(type, listener, capture)        // cbe method     
{                                                                               
  cbeAddEventListener(this.ele, type, listener, capture);                       
}                                                                               
function cbeWindowAddEventListener(type, listener, capture)   // window method  
{                                                                               
  cbeAddEventListener(window, type, listener, capture);                         
}                                                                               
function cbeDocumentAddEventListener(type, listener, capture) // document method
{                                                                               
  cbeAddEventListener(document, type, listener, capture);                       
}                                                                               
function cbeAddEventListener(obj, type, listener, capture)    // global         
{
  var eh = "obj.on" + type.toLowerCase() + "=" + listener;
  var uType = type.toUpperCase();
  if (!capture) capture = false;
  
  if (is.nav4 || is.opera) {
    if (uType == 'SCROLL') {
      window.cbeOldScrollTop = cbePageYOffset();
      window.cbeOnScrollListener = listener;
      cbeOnScrollEvent();
      return;
    }
    else if (uType == 'RESIZE') {
      window.cbeOldWidth = cbeInnerWidth();
      window.cbeOldHeight = cbeInnerHeight();
      window.cbeOnResizeListener = listener;
      cbeOnResizeEvent();
      return;
    }
  }
  if (is.dom2events) {
    obj.addEventListener(type, listener, capture);
  }
  else if (obj.captureEvents) {
    if (capture) obj.captureEvents(eval("Event." + uType));
    eval(eh);
  }
  else {
    eval(eh);
  }
}

function _cbeRemoveEventListener(type, listener, capture)        // cbe method
{
  cbeRemoveEventListener(this.ele, type, listener, capture);
}
function cbeWindowRemoveEventListener(type, listener, capture)   // window method
{
  cbeRemoveEventListener(window, type, listener, capture); 
}
function cbeDocumentRemoveEventListener(type, listener, capture) // document method
{
  cbeRemoveEventListener(document, type, listener, capture); 
}
function cbeRemoveEventListener(obj, type, listener, capture)    // global
{
  var eh = "obj.on" + type.toLowerCase() + "=null";
  var uType = type.toUpperCase();
  if (!capture) capture = false;
  
  if (is.nav || is.opera) {
    if (uType == 'SCROLL') {
      window.cbeOnScrollListener = null;
      return;
    }
    else if (uType == 'RESIZE') {
      window.cbeOnResizeListener = null;
      return;
    }
  }
  if (is.dom2events) {
    obj.removeEventListener(type, listener, capture);
  }
  else if (obj.releaseEvents) {
    if (capture) obj.releaseEvents(eval("Event." + uType));
    eval(eh);
  }
  else {
    eval(eh);
  }
}

function cbeOnScrollEvent()
{
  if (!window.cbeOnScrollListener) {
    return;
  }
  if (cbePageYOffset() != window.cbeOldScrollTop) {
    window.cbeOnScrollListener();
    window.cbeOldScrollTop = cbePageYOffset();
  }
  setTimeout("cbeOnScrollEvent()", 250);
}

function cbeOnResizeEvent()
{
  if (!window.cbeOnResizeListener) {
    return;
  }
  if (cbeInnerWidth() != window.cbeOldWidth || cbeInnerHeight() != window.cbeOldHeight) {
    window.cbeOnResizeListener();
    window.cbeOldWidth = cbeInnerWidth();
    window.cbeOldHeight = cbeInnerHeight();
  }
  setTimeout("cbeOnResizeEvent()", 250);
}

function cbeDefaultOnResizeListener()
{
  if (is.opera) location.replace(location.href);
  else history.go(0);
}

// End cbe_event.js